Phonograph-reproducer.



'I'.QA. EDISON. PHONOGRAPH BBPBODUGEB. APPLIUATION FILED MAn.1s,19os.

1996,625," y Pamea Ju1y4,191 1.

' UNrTED sTATEs IraTEN r.1? 'oFFloEr y THOMAS A. EDISON, OF PARK, ORANGE, NEW JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY, F XVEST ORANGE, NEWJERSEY,

NEW JERSEY.

i PHONOGRAPHTBEPRODUCEB..

Specification of Letters Patent. h 1 PtentedJ 1314, 191.1'.

Application ined March is, 19,65. serial No. 421,888. Y

To all 'whom 'it may concern.-

Be it known that LTHoMAs A. EDIsoN, a kcitizen of the United States, anda resident of Llewellyn Park, Orange, county of Essex, and State of New Jersey, have invented j certain new and useful Improvements in v Ihonograph-Beproducers, of which the vfollowing is afdescription.

Phonograph reproducers as now generally used, comprise a stylus'havlngv a curved .surfaceadapted to'be applied to the record groove with a suitable degree of pressure,

and as the record surface travels saidvstylus slides along the surface of the groove and moves toward and away from the body of the record. Y

My invention has for its object the elimivnation of the friction which is caused'by the sliding of the stylus over the record surface by providing a stylus in the form of a roller or ball, and rotatably supporting the same, so that it presses upon androlls along the recordfsurface.

My invention has for, its further object the provision of- -a support' for the said stylus, which enables it to rotate with a minimum amount of friction.

Referring .to the accompanylng drawing,

Figurel is a side elevation of a phonograph reproducer constructed in accordance 4with my invention; Fig. 2 is a detail section on line 2 2 Aof Fig. l; Fig. 3 is aside elevation of a stylus lever carrying a modified 'form of'rotary stylus, andv Fig. 4 is an end l lever 2, opposite the link 3, is mounted a' roller .7, which turns on the pin 8 and is provided with a grooved periphery, as shown in Fig. 2. The lever. 2 is' recessed to receive said roller 7 and vprovided 'with a pair of downwardly extending arms 9, connected by an integral web 14, formed with an opening through which the lower Ipart of the stylus l0 extends, in order to engage the record surface a, said stylus being supported by the walls of said opening so that it cannot'drop out of the opening when unsupported by the record surface. The stylus.

10 is preferably of Aspherical form and may `be of sapphire, 'metal'or other suitable material, the curvature of the stylus being the same as that, of the periphe'rical groove of the roller 7. The stylus. is loose vwith respect to the lever 2, sof that when the stylus rests upon the record surface it is pressed into frictional engagement with the peripheryV of the roller 7, and the latter' therefore forms. a rotary abutment or support for the stylus, whereby friction of the same against rotation -is .reduced to a. minimum. The floating weight 5 receives its support from .the record surface through the stylus l0,

roller 7 and pin 8. The lower surface of the weight 5 is recessed as shown at ill, to permit a vertical movement of the roller 7.

In the device of Figs. 3 and't, the stylus l0 is in the form of a ballhaving turnnions 12, the ends of whichA are retained by the fingersl formed in the ends of the arms 0 of the lever 2, and said ball rests upon the record surface a, and is pressed against `the periphery of the roller 7 inthe same manner as the stylus of Figs. l and 2. The rotary stylus and rotary abutment may, if desired, be suitably mounted for 'operatingupon a record in the formA of a disk having a laterally undulating record groove.

Having now described my invention, what I claim is:

l. In a phonograph reproducer, the coinbination of the floating weight, stylus lever pivoted thereto, a grooved roller carried by said lever, and a spherical stylus engaging the periphery of said roller, substant-ially as set forth.

2. In a honograph reproducer, the combination of) the floating weight, stylus lever, roller 7 and spherical stylus l0, the periphery of said ro'ller being grooved, and said A conPoRATIoN or eov Q A A 996,625'

stylus being held in engagement therewith gging the periphery ofeaid roller, substanby the pressure of the Stylus upon the record tially as set forth. 10. siirface, due to the floating Weight,vsubst.nv This specification signed and, witnessed tlally as Set lforth. this 13th day of March 1908.

3.- In a phono raph reproducer, the com- THOS-A. EDISON. bination of the oating weight,'stylus lever Witnesses:4 pivoted thereto, a grooved roller carried `'by FRANK L. DYER, said lever, and a. rotatable curved stylus eny ANNA R .KLEHM.

Copies of this patient may be obtained for five cents e`aeh,`by addressing the Conimissioner of Intenta,

, Washington, D.` C.

vIvtis hereby certified that in Letters Patent No. 996,625, granted` Joly 4, 1911 i upon the application of Thomas A. Edison, of Llewellyn Perk, Qrfuige, New J ersey,v for an improvement inl Phonograph-Reproducers, an errorvappeairs in the printed specification requiringl correction ne follows: Page l, line 14, the word turnnions should readtrwmi'ons; and that the said Letters Patent. sihoiild be read Wth'this I correction tilleul-'einv that the suine may conform to the recbid of the case in the Patent Office. 4 i 1 4 l Signed and sealed this 1st day of August,-A. Il, 1911;

` s E. B. MOORE,

' [SEAL] l I ("f'mmsse'oner of Patents.

Q A A 996,625'

stylus being held in engagement therewith gging the periphery ofeaid roller, substanby the pressure of the Stylus upon the record tially as set forth. 10. siirface, due to the floating Weight,vsubst.nv This specification signed and, witnessed tlally as Set lforth. this 13th day of March 1908.

3.- In a phono raph reproducer, the com- THOS-A. EDISON. bination of the oating weight,'stylus lever Witnesses:4 pivoted thereto, a grooved roller carried `'by FRANK L. DYER, said lever, and a. rotatable curved stylus eny ANNA R .KLEHM.

Copies of this patient may be obtained for five cents e`aeh,`by addressing the Conimissioner of Intenta,

, Washington, D.` C.

vIvtis hereby certified that in Letters Patent No. 996,625, granted` Joly 4, 1911 i upon the application of Thomas A. Edison, of Llewellyn Perk, Qrfuige, New J ersey,v for an improvement inl Phonograph-Reproducers, an errorvappeairs in the printed specification requiringl correction ne follows: Page l, line 14, the word turnnions should readtrwmi'ons; and that the said Letters Patent. sihoiild be read Wth'this I correction tilleul-'einv that the suine may conform to the recbid of the case in the Patent Office. 4 i 1 4 l Signed and sealed this 1st day of August,-A. Il, 1911;

" s E. B. MOORE,

' [SEAL] l I ("f'mmsse'oner of Patents.

It is hereby certified that in Letters Patent No. 996,625, granted July 4, 1911 upon the application ef Thomas A. Edison, 0f Llewellyn Park, Qmnge, New Jersey, for un improvement in Phonogmph-Repr0dueers. an error appears in the printed specication requiring' correction as follows: Page 1, line 74, the word tux'nninns" should read'trzmm'm'ls; and that the said Letters P ate'ut' sithould be read with this correction therein that the sume may conform to the reeh'i'd of the case in the Patent Office.

Signed and sealed this 1st day of August, A. D., 191.1.

E. B. MOORE,

[SEAL] n (lommissz'oner of Patents. 

